Results 51 to 60 of about 13,024 (250)

Study on overvoltage of hybrid LCC-VSC-HVDC transmission

open access: yesThe Journal of Engineering, 2018
Hybrid line commutation converter-voltage-source converter high-voltage direct current transmission (LCC-VSC-HVDC) power transmission has unique technical advantages, but its overvoltage study is not sufficient at present.
Dizhen Xu   +4 more
doaj   +1 more source

Probe on Problems of Combined Overvoltage Protector in Lightning Protectio

open access: yesGong-kuang zidonghua, 2012
The paper analyzed accidents in application of combined overvoltage protector in a substation in Yangquan mining area of Shanxi province and a pumped storage power station in Hubei province. It introduced principle and working characteristics of combined
YI Xiao-fei   +3 more
doaj  

Transient stability enhancement of DC-connected DFIG and its converter system using fault protective device

open access: yesJournal of Modern Power Systems and Clean Energy, 2017
Transient stability of doubly-fed induction generators (DFIGs) is a major concern in both AC and DC grids, and DFIGs must stay connected for a time during grid faults according to the power grid requirements.
Shaomin YAN   +4 more
doaj   +1 more source

Induced voltage at the closest pole on parallel line due to direct triggered lightning on 10 kV double circuit distribution line

open access: yesIET Generation, Transmission & Distribution, 2023
In 2019, triggered lightning was used to directly strike phase C of a 1.5 km, 10 kV double‐circuit distribution line in Guangzhou, China, with 2 flashes (13 return strokes) recorded.
Yating Zhao   +7 more
doaj   +1 more source

Influence of flow on the corrosion inhibition of carbon steel by fatty amines in association with phosphonocarboxylic acid salts [PDF]

open access: yes, 2005
This work was carried out to study the inhibition mechanism of a carbon steel in a 200 mg l−1 NaCl solution by a non-toxic multi-component inhibitor used for water treatment in cooling circuits.
Moran, Francis   +3 more
core   +3 more sources

The Platform to Characterizing the Thermoelectric Materials by Photo‐Crosslinked Ionic Gel Electrolyte

open access: yesAdvanced Electronic Materials, Volume 12, Issue 2, 21 January 2026.
The device platform, which utilizes a photo‐crosslinked ionic gel electrolyte with a broad range of oxidation and reduction capabilities, can effectively evaluate and screen the thermoelectric material candidates with high potential across a wide range of doping levels, thereby minimizing the effort required to identify dopants compatible with ...
Sunbin Hwang   +2 more
wiley   +1 more source

Study of Switching Overvoltage Protection Measures for Capacitor Compensation Device

open access: yesKongzhi Yu Xinxi Jishu, 2014
The harm of using damping and limiting measures to eliminate switching overvoltage of FC device was analyzed in theory and simulation. It presents that input overvoltage protection mainly depends on the insulation capability of the device and the effect ...
JIANG Jiajiu   +4 more
doaj  

Transformation of Transient Overvoltages by Inductive Voltage Transformers

open access: yesSensors, 2021
Overvoltage transients occur after any type of switching activity in a power network, such as breaker operation, fault occurrence/clearance and rapid load change. This distortion of voltage is transformed to the secondary circuit of a voltage transformer.
Michał Kaczmarek, Dariusz Brodecki
doaj   +1 more source

Analytical models of probability distribution and excess noise factor of Solid State Photomultiplier signals with crosstalk

open access: yes, 2012
Silicon Photomultipliers (SiPM), also so-called Solid State Photomultipliers (SSPM), are based on Geiger mode avalanche breakdown limited by strong negative feedback.
Afek   +11 more
core   +1 more source

Protection strategy for multi-terminal DC networks with fault current blocking capability of converters [PDF]

open access: yes, 2017
High voltage dc networks are a promising technology to flexibly transmit power over long distances. However, dc grid protection is still a major challenge. DC fault clearance can be mainly achieved with three devices. These are ac circuit breakers (ACCBs)
Adamczyk, A.   +5 more
core   +1 more source

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